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Flame-retardant coating casting material for guide rod of skimming plug

A guide rod and refractory layer technology, which is applied in the field of refractory layer castables, can solve the problems of long demoulding curing time, high production cost, shortening the demoulding curing time of production guide rods, etc., so as to shorten the demoulding curing time and reduce production. cost effect

Inactive Publication Date: 2014-07-16
高金菊
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies in the prior art that the refractory castable of the guide rod for the slag stopper has a long demoulding time and high production cost, and provides a refractory castable for the guide rod for the slag stopper, By adopting the technical solution of the present invention, the production cost can be greatly reduced, and the demoulding maintenance time of the production guide rod can be greatly shortened

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A refractory layer castable for a guide rod for a slag stop plug in this embodiment, its components are composed as follows in parts by mass: 52 parts of bauxite, 27 parts of magnesia, 13 parts of waste high-alumina bricks, and 9 parts of white corundum , 12 parts of blast furnace gas ash, 6 parts of fly ash, 14 parts of bentonite, 11 parts of phenolic resin, and 5 parts of silicone resin. Wherein: the waste high-alumina bricks are composed of powders with a particle size of ≤1mm, 3-1mm, 5-3mm, and 8-5mm, wherein powders with a particle size of ≤1mm account for 28% of the total mass of waste high-alumina bricks, The powder with a particle size of 3-1mm accounts for 45% of the total mass of waste high-alumina bricks, the powder with a particle size of 5-3mm accounts for 22% of the total mass of waste high-alumina bricks, and the powder with a particle size of 8-5mm accounts for 45% of the total mass of waste high-alumina bricks. 5% of the total mass of the brick; the ave...

Embodiment 2

[0045] A refractory layer castable for a guide rod for a slag stopper according to this embodiment, its components are composed as follows in parts by mass: 50 parts of bauxite, 25 parts of magnesia, 12 parts of waste high alumina bricks, and 8 parts of white corundum , 11 parts of blast furnace gas ash, 4 parts of fly ash, 12 parts of bentonite, 9 parts of phenolic resin and 4 parts of silicone resin. Wherein: the waste high-alumina bricks are composed of powders with a particle size of ≤1mm, 3-1mm, 5-3mm, and 8-5mm, wherein powders with a particle size of ≤1mm account for 28% of the total mass of waste high-alumina bricks, The powder with a particle size of 3-1mm accounts for 45% of the total mass of waste high-alumina bricks, the powder with a particle size of 5-3mm accounts for 22% of the total mass of waste high-alumina bricks, and the powder with a particle size of 8-5mm accounts for 45% of the total mass of waste high-alumina bricks. 5% of the total mass of the brick; t...

Embodiment 3

[0053] A refractory layer castable for a guide rod for a slag stopper according to this embodiment, its components are composed as follows in parts by mass: 54 parts of bauxite, 28 parts of magnesia, 14 parts of waste high-alumina bricks, and 10 parts of white corundum , 13 parts of blast furnace gas ash, 8 parts of fly ash, 15 parts of bentonite, 14 parts of phenolic resin and 6 parts of silicone resin. Wherein: the waste high-alumina bricks are composed of powders with a particle size of ≤1mm, 3-1mm, 5-3mm, and 8-5mm, wherein powders with a particle size of ≤1mm account for 28% of the total mass of waste high-alumina bricks, The powder with a particle size of 3-1mm accounts for 45% of the total mass of waste high-alumina bricks, the powder with a particle size of 5-3mm accounts for 22% of the total mass of waste high-alumina bricks, and the powder with a particle size of 8-5mm accounts for 45% of the total mass of waste high-alumina bricks. 5% of the total mass of the brick;...

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Abstract

The invention discloses a refractory layer pouring material for a guide rod for a slag stopper, and belongs to the technical field of the slag stopper for a converter slag stopper. A refractory castable for a guide rod for a slag stopper according to the present invention, its components are composed as follows in parts by mass: 50-54 parts of bauxite, 25-28 parts of magnesia, and 12-14 parts of waste high-alumina bricks , 8~10 parts of white corundum, 11~13 parts of blast furnace gas ash, 4~8 parts of fly ash, 12~15 parts of bentonite, 9~14 parts of phenolic resin, 4~6 parts of silicone resin. When the refractory layer castable of the present invention is used to produce guide rods, the demoulding and curing time is greatly shortened, the curing period of demoulding is 2 to 3 hours, and the curing after demoulding can be done for 20 to 24 hours. In addition, since the waste High alumina bricks, blast furnace gas ash and fly ash are used as castable components, so that these wastes can be recycled as resources, which greatly reduces the production cost of refractory layer castables.

Description

technical field [0001] The invention relates to the technical field of slag stoppers for converter slag stoppers, in particular to a refractory castable for guide rods for slag stoppers. Background technique [0002] At the end of BOF smelting, all the slag floats on the surface of molten steel. During the tapping process of the BOF, especially after most of the molten steel is discharged, the molten steel will form a strong eddy current at the tapping port, and the slag will inevitably follow the Molten steel flows out. Since slag contains a large amount of harmful components to molten steel, and these harmful components will return or dissolve into molten steel at any time, affecting the purity of molten steel and the quality of the final steel product. At the same time, a large amount of slag will also form different The form consumes the alloy, which reduces the alloy yield in the molten steel refining process. For this reason, iron and steel enterprises at home and ab...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66
Inventor 高金菊
Owner 高金菊